Copper-Mediated Trifluoromethylation of α-Diazo Esters with TMSCF3: The Important Role of Water as a Promoter

Mingyou Hu, Chuanfa Ni, and Jinbo Hu 

 J. Am. Chem. Soc., 2012, 134 (37), pp 15257–15260 

DOI: 10.1021/ja307058c